Punch press for cell case machines



D. R. VAIL ,059,501

PUNCH PRESS FOR CEL L CASE MACHINES v I Nov. 3, 1936.

2 Sheets-Sheet. 1

Filed June 12, 1935 l I: l f1] 2, ZflvE/flar Dan R. Wail 'NOV- 1936- D. R. VAIL 2,059,501

PUNCH PRESS FOR CELL CASE MACHINES Fi led June 12, 1935 2 Sheets-Sheet 2 Patented Nov. 3, 1936 UNITED STATES PATENT orrics Dan E. Vail, Evanston, Ill., assignor to Paper Partitions, Inc., Chicago, 111., a corporation of Illinois Application June 12, 1935, Serial No. 26,142

12 Claims.

This invention relates to a device for cutting slots of a desired length in paper webs for the production of punched strips for cell cases or partition cells.

More specifically, this invention relates to a punch press mechanism for cell case machines which can be readily adjusted to cut slots in paper webs of any desired length without changing the punching mechanism.

It is customary in machines for manufacturing cell cases to pass one or more Webs of paper through a punch press mechanism so that slots may be formed in the webs for the production of punched strips which may be mechanically or manually interlocked with each other to form the partition cell. It is obvious that the length of the slot cut into the web will vary considerably, depending upon the height of the cell case being formed. Furthermore, the slots may vary 2o widely in relative position to each other depending upon the size of partition cell being formed.

I have now provided a punch mechanism for cutting slots into paper webs which is readily adjustable to vary the position of the slots relative to each other and to vary the length of the slot being out without requiring the use of different dies.

It is therefore an object of this invention to provide a slot cutting device for paper webs which is capable of forming slots in the web having any desired length and position.

'A further object of this invention is to provide a punch press for cell case machines in which the amount of movement between the male and female members of the press can be readily adjusted to cut slots of any desired length.

It is a further object of this invention to provide a punch press for cutting slots in paper webs with knives having sloping cutting edges and regulating the amount of cutting edge to be used by limiting the movement of the press.

A specific object of this invention is to provide a punch press mechanism for cell case machines having a plurality of stationarily mounted cutting knives with sloping cutting edges and a movable female die for receiving said knives together with means for adjusting the movement of said die over said knives.

.5 "Other and further objects of this invention will be apparent from the following detailed description of the annexed sheets of drawings, which illustrate a preferred embodiment of the invention.

5 It should be understood that many changes may be made from the illustrated disclosure without departing from the scope of this invention.

On the drawings:

Figure 1 is a fragmentary side elevational view 5 of a punch press according to this invention showing the passage of a web of paper therethrough.

Figure 2 is a horizontal cross-sectional view taken substantially along the line II-II of Fig- 10 we 1.

Figure 3 is a vertical cross-sectional view, with parts in elevation, taken substantially along the line IIIIII of Figure 1.

Figure 4 is a horizontal cross-sectional view 15 taken substantially along the 'line IV-IV of Figure 3.

Figure 5 is a fragmentary elevational view of an adjustable eccentric disc which may be used in the apparatus of this invention. 20

structed with the use of one rod only on each 30 1 side of the machine.

A plate [5, preferably of the shape shown in Figure 4, is secured to the tops of the rods I!) to it as shown. This plate It is stationary and is provided near the center thereof with two 5 parallel rows of T-shaped grooves l6 and Il extending across the Width of the plate. A plurality of bolts I8 and ill have the heads thereof seated in the grooves as shown in Figure l. The shanks of the bolts 58 and I9 extend through 40 the vertical portion of the groove and through the horizontal flanges 2|! of the vertical cutting knives 2 l. Nuts 22 and 23 are threaded onto the bolts l8 and i9 respectively to hold the knives 2! in position. It is obvious that the position of 5 these knives may be readily adjust-ed by sliding the bolts in the grooves I6 and H and that the knives may be locked in adjusted position by tightening the nuts 22 and 23. While three knives 2! have been shown in Figures 3 and 4, it is obvious that one or any number of knives may be used. Each knife 2! has a cutting edge 24 sloping from the horizontal as shown in Figure 1. Each knife 2! likewise has a flared-out V-portion 25 extending along the long side thereof.

This flared-out V-portion is for punching a V into the paper web as will be hereinafter described.

A plate 28 is slidably mounted on rods it] to |3 inclusive, as shown. The plate 25 has a plurality of set screws 27, 28, 29 and 3t] threaded therethrough for supporting a platen 3i in which the female dies are mounted, as will be hereinafter described.

A plurality of bolts 32, 33, 34 and 35 are inserted through holes in the corners of the platen 3i adjacent to the set screws 27 to at. The bolts 32 to 35 extend through holes in the plate 26 and receive nuts 36 for securing the platen 3| to the plate 26. It is obvious that the set screws 21 to 39 may be adjusted to vary the position of the platen 3| relative to the plate 26. The central portion of the platen 3| is preferably cut away as indicated at ST! in Figures 1 and 3 to provide an opening therethrough. The punchings from the paper web can fall through this opening.

The platen 3| has formed therein, on each side of the opening 31, T-shaped grooves 38 and 39 for receiving the heads of bolts 153 and M. The bolts 49 and M extend through the ends of the female die members 42 and receive nuts 43 which may be tightened to secure the dies in position on the platen 35. The dies 52 are adapted to receive the cutting knives 2! and are thus providid with a slot opening 44 and a V-shaped opening .5 in communication therewith as shown in Figure 2. The dies .12 are readily adjusted by loosening the nuts 43 and sliding the dies together with the bolts 49 and 4H along the grooves 38 and 39. When the nuts 43 are tightened on the bolts 46 and 4| the dies are securely held in adjusted position.

The platen 3| carries two U-shaped bands 46 and 47 on each side thereof as shown. The web of paper W (Figure 1) is directed under the bands 46 and ll and over the dies 42 by feed rollers R and R. The bands 46 and 41 act as strippers as will be hereinafter described.

The plate 26, as shown in Figures 1, 2 and 3, carries on each side thereof a laterally extending pivot 48 and 49. Links or connecting rods 50 and 5| are pivotally mounted on the pivots G8 and 29 at one end thereof. The other ends of the links 5E and 55 are pivotally mounted on eccen tries 52 and 53 (Figure 3). The eccentrics are keyed to a shaft 54 driven by a pulley 55 which in turn is driven by a belt 56 (Figure 1) from a suitable source of power.

When the eccentrics 52 and 53 are rotated the connecting rods 50 and 5| slide the plate 26 up and down along the rods if] to l3. The female dies 12 are thus raised over the cutting knives 2| and the web W is punched as shown in Figure 6 with slots S having V-shaped ends E.

On the downward stroke the plate 26 is lowered, thereby carrying the dies 42 away from the knives 2|. The stripping bands 46 and 41 carry the web W downward with the dies thereby removing the web from the knives 2|. The web W is then advanced a suitable distance by the rollers R and R and on the succeeding up-stroke the punch press mechanism forms a new set of slots therein.

The length of the slots is readily adjusted by a manual setting of the set screws 21 to 30. If these set screws are lowered and the nuts 36 tightened around the bolts 32 to 35, it is obvious that the up-stroke of the plate 26 will not carry the dies 42 entirely over the knives 2|. As a result the lengths of the slots S in the web W will be shortened because that portion of the cutting edge 24 of the knives 2| which is not seated in the dies 42 will not be effective. It is therefore evident that the raising and lowering of the platen 3| by the set screws 21 to 30 will effect a variation in the length of the slots S.

As pointed out above, the cutting knives 2| and the dies $2 are readily adjusted relative to each other by sliding the same along in the T-shaped grooves provided in the stationary top plate I5 and in the platen 3|. When adjusting the position of the knives and dies, it is preferable to seat the dies around the knives and move each knife together with its corresponding die so that when the same are tightened into position they will be in exact alignment.

As shown in Figure 6, the ends of the slots S are enlarged or flared outwardly as at E. The provision of this enlarged portion is desired be cause when the web W is out along the line L to produce the cell case strip the enlarged portions E of the slots S permit easy interlocking of the strip with other strips. The enlarged portions E serve as guides to the slots S.

In Figure 5 there is shown another means of adjusting the movement of the lower dies 42 which may be used together with the set screws 21 to 30 or in place of these set screws. As shown in Figure 5 a disc fit! for mounting on a drive shaft (not shown) is provided with a T-shaped groove 6| extending thereacross. A cross-head member 52 is slidably mounted in this groove 6| and may be locked in position therein in the usual manner. The cross-head 62 carries a pivot 63 on which is pivotally mounted a connecting rod M. It is obvious that the movement of the plate 2'5 of the punch press mechanism may be Varied. by an adjustment of the cross-head to vary the eccentric throw of the disc 69. The eccentric disc 68 may be used to roughly adjust the movement of the dies 62 while the set screws 21 to 30 may be used as micrometer adustments for this movement.

I am aware that many changes may be made and numerous details of construction may be varied through a wide range without departing from the principles of this invention, and I, therefore, do not purpose limiting the patent granted hereon otherwise than necessitated by the prior art.

I claim as my invention:

1. A punch press mechanism comprising a cutting knife having a sloping cutting edge, a female die for receiving said knife, means for moving said die over said knife for seating the knife in the die, and means to adjust the amount of movement for regulating the length of cut to be made by the knife.

2. A punch press mechanism comprising a male cutting knife having a sloping cutting edge, a female die for receiving said knife, means for feeding a web of paper over said die, means for moving said female die over said knife for seating the knife in the die, and means to adjust the amount of movement for regulating the length of cut made by the knife in said paper.

3. A punch mechanism comprising a frame structure, a top plate stationarily mounted in said frame structure, cutting knives having sloping cutting edges adjustably mounted in said plate, a lower plate slidably mounted on said frame structure, female dies adapted to receive said cutting knives, adjustably mounted on said plate, and means to regulate the movement of said plate to vary the length of cut by said knives.

4. A punch mechanism comprising a frame structure, a plate securely mounted on top of said frame structure, a T-shaped groove in the bottom of said plate, cutting knives having sloping cutting edges, bolts extending from said groove for securing said knives to said plate, a lower plate slidably mounted on said frame structure, female dies carried by said plate for receiving the cutting edges of said knives, and means for regulating the movement of said dies to vary the cuts made by said knives.

5. A punch press comprising a frame struc ture, a plurality of knives vertically mounted thereon, said knives having cutting edges sloping from the horizontal, female dies slidably mounted in said frame for receiving said knives, means for feeding a web of paper over said dies, means for raising the dies and paper over the knives to cut slots in the paper, and means for regulating the amount of movement of said dies to produce a slot of the desired length in the paper.

6. A punch press mechanism for cell case machines to cut slots in paper webs, comprising a frame structure, a plate secured to the top of said frame structure, said plate having a pair of parallel T-shaped grooves cut in the bottom thereof near the center of the plate, bolts seated in said grooves, a plurality of knives securedto said plate by said bolts, said knives having cutting edges sloping from the horizontal, a lower plate slidably mounted on said frame, a platen carried by said lower plate, female dies for receiving the knives secured on said platen, means for raising and lowering said plate toward said knives, and means for raising and lowering said platen relative to said slidable plate for adjusting the amount of insertion of the knives into the dies to thereby regulate the lengths of the slots being cut.

'7. A punch press mechanism for cell case machines to cut slots in paper webs comprising a frame structure, a plurality of cutting knives secured to the top of said frame structure and extending vertically downward therefrom, said knives having cutting edges sloping from the horizontal, a plate slidably mounted on said frame structure, a platen carried by said plate in spaced relation therefrom, set screws for adjusting the position of said platen relative to said plate, female dies adjustably mounted on said platen for receiving said knives, and means for raising said plate to carry the dies over said knives whereby an adjustment of the position of the platen relative to the plate will effect a variation in the length of slots cut by said knives.

8. A slot cutting device comprising a frame, knives vertically suspended from the top of said frame, said knives having cutting edges on the bottoms thereof sloping from the horizontal, female dies slidable vertically on said frame for receiving said knives, stripper bands disposed over said dies, means for feeding a web of paper over said dies and under said stripper bands and means for adjusting the movement of said dies to vary the length of slot cut into the paper by the knives.

9. A slot cutting device comprising a frame, knives vertically suspended from the top of said frame, said knives having cutting edges on the bottoms thereof sloping from the horizontal and having flared out V edges on the long sides thereof, female dies slidable vertically on said frame for receiving said knives, and means for adjusting the amount of movement of said dies to vary the amount of insertion of said knives therein.

10. The method of forming slots in paper webs which comprises passing a paper Web over a female die, moving said die with the web thereon against sloping cutting edges and regulating the amount of movement to produce slots of various lengths.

11. The method of forming slots in paper webs which comprises passing a paper web over a female die and under a stripper carried by the die, moving said die with the web thereon against sloping cutting edges, regulating the amount of movement to produce slots of various lengths in the web and withdrawing said die and stripper for removing the web from the cutting edges.

12. The method of forming slots in webs which comprises passing a web over a female die, moving said die with the web thereon against a sloping cutting edge and regulating the amount of movement to produce a slot of the desired length in said web, said movement being the normal cutting action of the method.

DAN R. VAIL.

CERTIFICATE OF CORRECTION.

Patent No. 2,059,501. Fiovember 3, 1936.

DAN R. VAIL.

It is hereby certified that error appears in the printed specific tion of the above numbered patent requiring correction as follows: Page 2, first column, line 51, after the reference numeral "54-" insert the words rotatably supported in bearing supports such as 549.. The shaft 54 is; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and. sealed this 12th day of January, A. D. 195'? Henry Van Arsdale QSeal) I Acting Commissioner oi Patents, 

